4402640668 has 6 divisors (see below), whose sum is σ = 7704621176. Its totient is φ = 2201320332.

The previous prime is 4402640663. The next prime is 4402640681. The reversal of 4402640668 is 8660462044.

It is a self number, because there is not a number n which added to its sum of digits gives 4402640668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4402640663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550330080 + ... + 550330087.

Almost surely, 2^4402640668 is an apocalyptic number.

It is an amenable number.

4402640668 is a deficient number, since it is larger than the sum of its proper divisors (3301980508).

4402640668 is a wasteful number, since it uses less digits than its factorization.

4402640668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100660171 (or 1100660169 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 4402640668 is about 66352.3976055123. The cubic root of 4402640668 is about 1638.9702870778.

The spelling of 4402640668 in words is "four billion, four hundred two million, six hundred forty thousand, six hundred sixty-eight".